This source file includes following definitions.
- init_etherdev
- eth_mac_addr
- ether_setup
- tr_setup
- ether_config
- register_netdev
- unregister_netdev
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25 #include <linux/config.h>
26 #include <linux/kernel.h>
27 #include <linux/sched.h>
28 #include <linux/types.h>
29 #include <linux/fs.h>
30 #include <linux/malloc.h>
31 #include <linux/if_ether.h>
32 #include <linux/if_arp.h>
33 #include <linux/string.h>
34 #include <linux/netdevice.h>
35 #include <linux/etherdevice.h>
36 #include <linux/trdevice.h>
37 #ifdef CONFIG_NET_ALIAS
38 #include <linux/net_alias.h>
39 #endif
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59 #define MAX_ETH_CARDS 16
60 static struct device *ethdev_index[MAX_ETH_CARDS];
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72
73 struct device *
74 init_etherdev(struct device *dev, int sizeof_priv)
75 {
76 int new_device = 0;
77 int i;
78
79
80 if (dev == NULL) {
81 int alloc_size = sizeof(struct device) + sizeof("eth%d ")
82 + sizeof_priv + 3;
83 struct device *cur_dev;
84 char pname[8];
85
86 for (i = 0; i < MAX_ETH_CARDS; ++i)
87 if (ethdev_index[i] == NULL) {
88 sprintf(pname, "eth%d", i);
89 for (cur_dev = dev_base; cur_dev; cur_dev = cur_dev->next)
90 if (strcmp(pname, cur_dev->name) == 0) {
91 dev = cur_dev;
92 dev->init = NULL;
93 sizeof_priv = (sizeof_priv + 3) & ~3;
94 dev->priv = sizeof_priv
95 ? kmalloc(sizeof_priv, GFP_KERNEL)
96 : NULL;
97 if (dev->priv) memset(dev->priv, 0, sizeof_priv);
98 goto found;
99 }
100 }
101
102 alloc_size &= ~3;
103
104 dev = (struct device *)kmalloc(alloc_size, GFP_KERNEL);
105 memset(dev, 0, alloc_size);
106 if (sizeof_priv)
107 dev->priv = (void *) (dev + 1);
108 dev->name = sizeof_priv + (char *)(dev + 1);
109 new_device = 1;
110 }
111
112 found:
113
114 if (dev->name &&
115 ((dev->name[0] == '\0') || (dev->name[0] == ' '))) {
116 for (i = 0; i < MAX_ETH_CARDS; ++i)
117 if (ethdev_index[i] == NULL) {
118 sprintf(dev->name, "eth%d", i);
119 ethdev_index[i] = dev;
120 break;
121 }
122 }
123
124 ether_setup(dev);
125
126 if (new_device) {
127
128 struct device **old_devp = &dev_base;
129 while ((*old_devp)->next)
130 old_devp = & (*old_devp)->next;
131 (*old_devp)->next = dev;
132 dev->next = 0;
133 }
134 return dev;
135 }
136
137
138 static int eth_mac_addr(struct device *dev, void *p)
139 {
140 struct sockaddr *addr=p;
141 if(dev->start)
142 return -EBUSY;
143 memcpy(dev->dev_addr, addr->sa_data,dev->addr_len);
144 return 0;
145 }
146
147 void ether_setup(struct device *dev)
148 {
149 int i;
150
151
152 for (i = 0; i < DEV_NUMBUFFS; i++)
153 skb_queue_head_init(&dev->buffs[i]);
154
155
156 if (dev->name && (strncmp(dev->name, "eth", 3) == 0)) {
157 i = simple_strtoul(dev->name + 3, NULL, 0);
158 if (ethdev_index[i] == NULL) {
159 ethdev_index[i] = dev;
160 }
161 else if (dev != ethdev_index[i]) {
162
163 printk("ether_setup: Ouch! Someone else took %s\n",
164 dev->name);
165 }
166 }
167
168 dev->hard_header = eth_header;
169 dev->rebuild_header = eth_rebuild_header;
170 dev->set_mac_address = eth_mac_addr;
171 dev->header_cache_bind = eth_header_cache_bind;
172 dev->header_cache_update = eth_header_cache_update;
173
174 dev->type = ARPHRD_ETHER;
175 dev->hard_header_len = ETH_HLEN;
176 dev->mtu = 1500;
177 dev->addr_len = ETH_ALEN;
178 for (i = 0; i < ETH_ALEN; i++) {
179 dev->broadcast[i]=0xff;
180 }
181
182
183 dev->flags = IFF_BROADCAST|IFF_MULTICAST;
184 dev->family = AF_INET;
185 dev->pa_addr = 0;
186 dev->pa_brdaddr = 0;
187 dev->pa_mask = 0;
188 dev->pa_alen = 4;
189 }
190
191 #ifdef CONFIG_TR
192
193 void tr_setup(struct device *dev)
194 {
195 int i;
196
197
198 for (i = 0; i < DEV_NUMBUFFS; i++)
199 skb_queue_head_init(&dev->buffs[i]);
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201 dev->hard_header = tr_header;
202 dev->rebuild_header = tr_rebuild_header;
203
204 dev->type = ARPHRD_IEEE802;
205 dev->hard_header_len = TR_HLEN;
206 dev->mtu = 2000;
207 dev->addr_len = TR_ALEN;
208 for (i = 0; i < TR_ALEN; i++) {
209 dev->broadcast[i]=0xff;
210 }
211
212
213 dev->flags = IFF_BROADCAST;
214 dev->family = AF_INET;
215 dev->pa_addr = 0;
216 dev->pa_brdaddr = 0;
217 dev->pa_mask = 0;
218 dev->pa_alen = 4;
219 }
220
221 #endif
222
223 int ether_config(struct device *dev, struct ifmap *map)
224 {
225 if (map->mem_start != (u_long)(-1))
226 dev->mem_start = map->mem_start;
227 if (map->mem_end != (u_long)(-1))
228 dev->mem_end = map->mem_end;
229 if (map->base_addr != (u_short)(-1))
230 dev->base_addr = map->base_addr;
231 if (map->irq != (u_char)(-1))
232 dev->irq = map->irq;
233 if (map->dma != (u_char)(-1))
234 dev->dma = map->dma;
235 if (map->port != (u_char)(-1))
236 dev->if_port = map->port;
237 return 0;
238 }
239
240 int register_netdev(struct device *dev)
241 {
242 struct device *d = dev_base;
243 unsigned long flags;
244 int i=MAX_ETH_CARDS;
245
246 save_flags(flags);
247 cli();
248
249 if (dev && dev->init) {
250 if (dev->name &&
251 ((dev->name[0] == '\0') || (dev->name[0] == ' '))) {
252 for (i = 0; i < MAX_ETH_CARDS; ++i)
253 if (ethdev_index[i] == NULL) {
254 sprintf(dev->name, "eth%d", i);
255 printk("loading device '%s'...\n", dev->name);
256 ethdev_index[i] = dev;
257 break;
258 }
259 }
260
261 if (dev->init(dev) != 0) {
262 if (i < MAX_ETH_CARDS) ethdev_index[i] = NULL;
263 restore_flags(flags);
264 return -EIO;
265 }
266
267
268 if (dev_base) {
269 while (d->next)
270 d = d->next;
271 d->next = dev;
272 }
273 else
274 dev_base = dev;
275 dev->next = NULL;
276 }
277 restore_flags(flags);
278 return 0;
279 }
280
281 void unregister_netdev(struct device *dev)
282 {
283 struct device *d = dev_base;
284 unsigned long flags;
285 int i;
286
287 save_flags(flags);
288 cli();
289
290 if (dev == NULL)
291 {
292 printk("was NULL\n");
293 restore_flags(flags);
294 return;
295 }
296
297 if (dev->start)
298 printk("ERROR '%s' busy and not MOD_IN_USE.\n", dev->name);
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305 #ifdef CONFIG_NET_ALIAS
306 if (dev_base == dev)
307 dev_base = net_alias_nextdev(dev);
308 else
309 {
310 while(d && (net_alias_nextdev(d) != dev))
311 d = net_alias_nextdev(d);
312
313 if (d && (net_alias_nextdev(d) == dev))
314 {
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318 net_alias_nextdev_set(d, net_alias_nextdev(dev));
319 }
320 #else
321 if (dev_base == dev)
322 dev_base = dev->next;
323 else
324 {
325 while (d && (d->next != dev))
326 d = d->next;
327
328 if (d && (d->next == dev))
329 {
330 d->next = dev->next;
331 }
332 #endif
333 else
334 {
335 printk("unregister_netdev: '%s' not found\n", dev->name);
336 restore_flags(flags);
337 return;
338 }
339 }
340 for (i = 0; i < MAX_ETH_CARDS; ++i)
341 {
342 if (ethdev_index[i] == dev)
343 {
344 ethdev_index[i] = NULL;
345 break;
346 }
347 }
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355 dev_close(dev);
356
357 restore_flags(flags);
358 }
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